- Variety Info
- Sowing Info
- Growing Info
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Variety Info
Family: Asteraceae
Type: Cosmos (Learn more)
Native: Mexico and Arizona
Hardiness: Annual
Exposure: Full sun
Bloom Period: Summer to frost
Plant Dimensions: 24"–36" tall
Variety Info: 3"–4" mostly double (with some semi-double) pink, white, and burgundy blossoms
Attributes: Attracts Hummingbirds, Attracts Butterflies, Attracts Pollinators, Cut Flower, Drought Tolerant
Sowing Info
When to Sow Outside: RECOMMENDED. 1 to 2 weeks after your average last frost date, and when soil temperature is at least 60°F.
When to Start Inside: 4 to 6 weeks before your average last frost date.
Days to Emerge: 5–10 days
Seed Depth: Barely cover
Seed Spacing: A group of 3 seeds every 12"
Thinning: When 1" – 2" tall, thin to 1 every 12"
Your hardiness zone is
Growing Info
Harvesting: For longest vase life, cut stems just as flower buds begin to open.
- Veronica C.Rated 5 out of 5 stars8/18/25So beautiful!
These are the most gorgeous blooms! They are so easy to grow and have the most delicate petals. I’ve found honey bees snoozing inside them as well!
Which best describes you as a gardener? BeginnerBIBotanical Interests8/20/25Hey Veronica,
Thank you so much for sharing your experience with our Double Click Blend Cosmos Seeds! We absolutely love hearing that you're getting those gorgeous, delicate blooms - and how wonderful that the honey bees are finding them so irresistible they're actually taking naps inside the flowers! That's such a sweet detail and shows just how bee-friendly these beauties are. It's great to hear they've been so easy to grow for you too! We'd love to see photos sometime! Keep on growing 🌻️
- Delainey A.Rated 5 out of 5 stars10/24/245 Stars
Love these blooms! All the colors are beautiful, but the purple/pink is my favorite! The white is gorgeous too and so is the light pink, but the blooms were pretty small for the light pink. All my seeds germinated and made beautiful bouquets this summer. People I shared the bouquets with didn’t believe they were cosmos!
- Ashley B.Rated 1 out of 5 stars8/5/241 Star
I had planned my flower bed based on size dimensions and growth habits listed on all my seed packets. However, these cosmos are monstrous, reaching every bit of 5 feet tall and smothering the other plants in front of them (this would not be a bad aspect if I had known what to plan for). Some branches were so huge and weak that they have split/broken off from the main "trunk" (not weather-related). Another extremely disappointing factor is that so many of the slender stems with blooms at the end are also so weak that they have bent/crimped from the weight of the flowers, thus killing the bloom and the adjoining buds. Their growing conditions are in full sun, consistent water, and the only fertilizer I have used was Bio-tone at the time of planting. I am upset over all the above cons; HOWEVER, the flowers themselves are truly stunning and the plants are very floriferous.
BIBotanical Interests8/5/24Hey Ashley, Thank you so much for the feedback. One thing about our Double Click Blend cosmos that you might have missed: in the instructions inside the seed packet, we recommend not fertilizing, as the cosmos simply doesn't need it. When fertilized with a nitrogen-rich fertilizer (which Bio-tone is), most cosmos develop tall, lanky growth comparable to what you're experiencing. In many cases, they experienced reduced flowering along with that tall growth, so we're thrilled to hear that's not the case and that you're seeing lots of beautiful blooms! But we would encourage you to skip the fertilizer before planting next time; Bio-Tone is a slow-release fertilizer that feeds over about a four-month period, and your cosmos doesn't need it. I hope that helps. Keep on growing 🌻️
- Jordan M.Verified BuyerRated 5 out of 5 stars7/4/245 Stars
Lovely
- Ella M.Rated 5 out of 5 stars6/29/245 Stars
These seeds sprouted in ONE DAY. I am using miracle gro potting mix and simple lidded and vented seed trays, nothing special!